[package] uhttpd:

[package] uhttpd:
	- rewrite large parts of the server, use uloop event driven structure
	- support concurrent requests and make the upper limit configurable
	- implement initial version of HTTP-to-ubus JSON proxy and session.* namespace
	- add compile time support for debug information
	- code style changes
	- bump package revision

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31931 3c298f89-4303-0410-b956-a3cf2f4a3e73